
Vivian L. answered 10/23/13
Tutor
3
(1)
Microsoft Word/Excel/Outlook, essay composition, math; I LOVE TO TEACH
Hi Sterling;
y=mx+b
m=slope
b=y-intercept, the value of y when x=0.
4x-y = -5
We need to isolate y.
Let's begin with subtracting 4x from both sides...
-4x+4x-y=-5-4x
-y=-5-4x
Let's multiply both sides by -1...
-1(-y)=-1(-5-4x)
y=5+4x
or, to be consistent with y=mx+b..
y=4x+5
Does this help? If not, please let me know.